Originally Posted by
Hemituna
Both 6.4 & 6.2L have 120.5 LSA, and both have +14 ground into cam
So at idle (when fully advanced), intake lobe is at 106.5 and exhaust is at 134.5 (can see this on logger)
Demon Plus cam is 123 LSA with +10 (113 intake cl) ground into cam.
So at idle (fully advanced) it will actually be at 113 intake CL and 133 exhaust CL
BUT..... PCM still thinks it is a 120.5 LSA so will show 106.5 (134.5) even tho actual position is 113 (133).
So we are actually 6.5 degs more RETARDED (intake cl) than PCM thinks and shows.
As these engines use only the exhaust number to move the cam, to run it straight up at 123 LSA (123 cl intake, 123 cl exhaust) you will need to use 124.5 on exhaust cam table (10 degs retarded from full adv)
Going to (for example) 128.0 from 124.5 on exhaust cam table would then advance the cam 3.5 degs from the 123/123
Which would make actual position 119.5 intake and 126.5 exhaust.
For a 6.2/6.4L with Demon Plus cam, I would start with 124.5 (which puts the cam at straight up with 123LSA+10) in the entire exhaust table and work from there.